Health management device

Abstract

The invention relates to a health management system comprising a body or limb movement detecting means for detecting the movements and position of a users body or limb(s) in 3D space, a movement analyzing means for analyzing the data of the measurement carried out by the body or limb movement detecting means, wherein the body or limb movement detecting means comprises at least three sensors or markers for tracking a user's body or limb movement in 3D space by measuring an angle embedded by two body parts of the user which are connected to each other by a joint being the apex of the angle to be measured, at which one of the sensors or markers is provided. To detect the offset a change in distance between two neighboring sensors or markers indicates an offset of the sensor at the joint spaced apart from the apex.

1 . Health management system comprising:
 a body or limb movement detecting means for detecting the movements and position of a users body or limb (s) in 3D space,   a movement analyzing means for analyzing the data of the measurement carried out by the body or limb movement detecting means;   wherein the body or limb movement detecting means comprises at least three sensors or markers for tracking a user's body or limb movement in 3D space by measuring an angle embedded by two body parts of the user which are connected to each other by a joint being the apex of the angle to be measured, at which one of the sensors or markers is provided, characterized in that a change in distance between two neighboring sensors or markers indicates an offset of the sensor at the joint spaced apart from the apex, the change in distance corresponding to the body or limb movement.   
   
   
       2 . The health management system according to  claim 1 ,
 characterized in that from a measurement of an offset of the marker at the joint a stimulation signal is generated for causing the user to move the sensor towards the apex.   
   
   
       3 . The health management system according to  claim 1 , wherein the body or limb movement measuring means is selected from a camera-based computer vision with markers, a sensor garments a motion sensor, and a position sensor. 
   
   
       4 . The health management system according to  claim 3 , further comprising a least one mode stimulator that includes an audio mode stimulator having an audio stimulation unit or a video mode stimulator with a video stimulation unit. 
   
   
       5 . (canceled) 
   
   
       6 . (canceled) 
   
   
       7 . A method of automatically position learning for camera-based limb tracking in particular in home stroke rehabilitation, comprising the steps of:
 placing at least three markers on a user's limb to be analyzed for tracking a user's body or limb movement, so that they build an angle; embedded by two body parts of the user which are connected to each other by a joint being the apex of the angle to be measured, at which one of the markers is provided;   comparing positions of the markers relative to each other, wherein a change in distance between two neighboring markers indicates an offset of the marker at the joint of the limb spaced apart from the apex.   
   
   
       8 . The method according to  claim 7 , characterized in that it further includes the steps of
 computing the motion between the neighboring sensors to determine if the marker at the joint is placed at the upper or lower limb;   generating a first offset value assuming that offset between joint and marker is zero;   recording the user's movement and adjusting the assumption on the marker or sensor offset by analyzing the motion.   
   
   
       9 . The method according to  claim 8 , characterized in that it further includes the step of
 minimizing the variation in the distance of the markers to the expected joint position as observed from the recorded motion.   
   
   
       10 . The method according to  claim 7 , characterized in that it comprises steps of
 generating a visual and/or additive stimulation signal when said offset data is above a target offset range so as to cause the user to adjust the location of the sensor by the joint by moving the sensor towards the apex of the angle embedded between the user's limbs.